Ready-made in the USA. Ships with NFC and magnets installed. Coinfinity brings ORDER to CHAOS. This 41 mm stacker is the new body style: pebbled fuzzy-skin, squircle tube, flush lid embossed COINFINITY + 41 mm, and a circular blue C badge on the front of every module. Tap the badge with the free Coinfinity Tracker app. No account. Works offline. Track Your Stack. Sold as a 2-pack. Sized for American Silver Eagles and other coins that fit a 41.0 mm inner diameter. Typical fill is about 20 coins, depending on thickness. Closest size wins — if they fit the well, they are compatible. Compatible coins From the official Compatible Coins list. Not exhaustive. American Silver Eagle (1 oz) — 40.6 mm — United States Mint Australian Kookaburra (1 oz) — 40.6 mm — Perth Mint Silver Britannia (post-2013) — 38.61 mm — The Royal Mint South African Krugerrand (Silver) — 38.7 mm — South African Mint Chinese Silver Panda (1 oz) — 40.0 mm (sizes have varied) Printed in metal-safe PETG — PLA can tarnish silver. Designed and manufactured in the USA. White is solid matte fuzzy-skin PETG. Black is CR-PETG, a bit glossy. What is on the tube Flush lid embossed COINFINITY + 41 mm Front circular blue C badge with 25 mm NTAG215 (included) Magnets installed for stacking on Coinfinity bases and other modules 2-pack (2 stackers) Prefer to print your own? The official 3D model (STL) is listed separately. See all compatible coins · Coinfinity Tracker